Laying-on apparatus for book-fastening machines



jam; 29 39223. 1,440,370

U. BISCHOF. L'AYnNs oN APPARATUS FOR BooK FAsTENlNG MACHINES .A

Fl LED JAN. 22. 1921 upon the laying-on table, with guide rib 35 which engages in a corresponding groove in the laying-on table, and serves as a stop for the signature. K

rllhe needle apparatus is fixed to the framing 1 by means of the bracket 36a. rlhis paratus has slidably guided init needle bars 37 that carry the needles 38, 39. Each time after the worktable has been shifted into its extreme left hand position (working position), these needle bars receive for the purpose of forming the stitches, a to-and-fro motion by. known means not belonging to this invention.y 42 is Vthe stitching bar formed with apertures for the passage of the needles, and with an inclined surface 43, the purpose of which is hereinafter described. l y v y A. compression spring 40` mounted on the bar 16 is situated at one end on the left hand arm of the table 8, and at its other end on a set ring 41 fixed on the bar 16. By this means it imparts to the bar 16, together with the ring 15 and the lever 12, a tendency to assume the position shown in Fig. 1.`

The mode of operation of the improved apparatus is as follows `ifterthe operator has laid first a signature 44 upon the rmachine table, the machine is' started, the shaft 3 being caused to re-` ,33, the worktable 8, together with the signature 44 situated on it, slides towards the left,

sothat thevlug 36 of the table comes to bear upon the lug` 37 of the framing 1, and the pin 25 of the lever 26 entersthe hole in the end ofthe lever 27 (Fig. 2). ln this position of the table 8 the needles 30 of the piercer bar are situated directly underneath the apertures 45"L of the stitching bar 42. lWhen the groove 5 acts upon the lever 29, the oscillations of the latter cause likewise the lever 27 to rock, with the result that through the parts 25, 26, 19, 20, the piercer bar 23 is lifted inside the guides 24, and the signature 44 is pierced from underneath by the needles 30, so that the said parts are returned again into their former position.

Then by known means, not shown in thel drawing, 'the needle bar 3'?" is depressed for the purpose of fastening the signature, and is then again raised. At the same time, for the purpose of forming the stitch, the bar 16 carrying the thread-looper 17, is shifted towards the left. This is effected by the fact that in the above mentioned leftrhand of the bar 16 by overcoming the resisting pressure of the spring 40.

lt is obvious that during the fastening operation, the worktable 8 must remain in the left hand position shown in Fig. 2, During this operation the operator has abundant time to lay a fresh signature 45a straddlewise upon the table 8 in such a manner that the said sheet will come with its right hand edgeagainst the left hand edge of the stop 34. After the signature has been fastened, the cam 6, by acting upon the lever 31, causes the table to more back into previously. ln the nent left hand movement of the table, the left hand edge of the stop 11 will strike against the right hand edge of the signature 45a last laid on, and will push the latter under the needles,l whereupon this signature also will be fastened by the latter. During this fastening operation thel operator has again abundant time to lay a fresh -signatureupon the table, and p the series of opera-tions begins afresh.

lFromthe foregoing it will be understood that the laying of the signatures upon the table does not require any special skill, andv in order to utilize the time gained by theoperator, they improved machine can be driven at a higher speed than a machine of the oscillating machine table type, with of course the additional advantage that the output of the machine is increased. lf in laying a siglnature upon the table, its fold should 'not lie completely upon the apex of they table, this can be done with certainty in transfer ring the signaturelunder the needles, because the back of the signature that'may be acci. dentally raised off the table, serves by means of the inclined surface 43 of the stitching bar 42, to press thesignature against the table. Further the signatures in passingbetween the stitching bar, are subjected to a braking action with ,the result that they dol not move faster than the stop 11, and come to rest with it and in a position bearing against it. y l

lllfhat l claim isry. i

1. in a book-fastening machine, the combination of a machine framing with a straight guide extending in the ldirection of the width of the machine a table for the signatures to ,be fastened, slidable along.` said guide and having a stitching portion and a signature receiving portion, aXed stop lor limitingr the signature in the receiving portion on the talole and means for shitt-v ing` the table away from the needles along` its longitudinal axis after the signatute lying on said stitching portion has been fastened whereby the signature lying, on said receiving portion is caused to come in the stitching` position.

2. ln a hook-fastening machine, the coinbination ot a machine ramine` with a straight guide extending in the iection of the width of the machine9 a table for the signatures to he tastened slidahle along said guide and having' a stitching portion and a signature receiving portion a iixed stop for Stopping the signature en the receiving portion on the side furthest from the needles, a stop on the table7 whose end surface facing` needles, is at right angles to the surface of the table7 Whilst the opposite end surface is inclined to the suri'aee ot' the table, the arrangement being such that when the table is being moved away from the needles, the stop located on. the table slips freely under the second last mentioned signature and when the table is being moved towards the tablei a needle mechanism and a fasteningA mechanism, a har located under this mechanisin, having apertures for the passae of the needles, an inclined snriace at one end of said loai, means for' moving the table nndei' seid mechanism7 said surface having the function ot' pressing a signature lying on the table, tightly upon the latter.

1l. a hook-fastening machine, the coinhination oi" a machine framing With straight guide, a table slidahle along` the latter loar slidaloly guided in the table, a thread loopei1 located on said har, a compression spring located on said loaf having' a constant tendency to push said har in one direction, and a rocking lever located on said table, engaging said bar lol the purpose et pushing saine, ano a cani for in'ipartingosi cillatory motion to said rockinglever.

ln testimony whereof l have ailixed my signature.

llLRlCldl BlSCHQlT. 

